What was found
DEPARTING, ECAM ALERT FLAPS STUCK WITH SYSTEM 1 & 2 ON OVERHEAD. CYCLED HANDLE IAW QRH, NO RELIEF. COMPLIED WITH QRH AND RETURN TO DEPARTURE. INSTALLED HARDWARE ON NR 3 LT WING FLAP TRANSMISSION TORQUE TUBE IAW AMM 27-54-15-04 D (2). PERFORMED ADJUSTMENT AND TESTED IAW AMM 27-50-00-05.